The potential for growth strain measurements for detection of tension wood was assessed in trees
from two plantations of 10- to 11-year-old Eucalyptus globulus. Tension wood had commonly developed
at or near the stem periphery of straight, vertical and dominant trees. At a localized level
growth strain was found to be a good indicator of tension wood. However, in some cases moderate
to low growth strain was also detected in some trees where tension wood had been overgrown with
small amounts of normal wood. On a whole tree basis the relationship was not as clear. In this case
growth strain values determined from multiple measurements appear to be influenced primarily
by tissue close to the site of measurements and not by wood at relatively remote locations. In some
cases low growth strain values were found in trees with significant tension wood and in others high
growth strain values where little tension wood had developed.
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